We have effectively used AVS-Penogram as the primary diagnostic method for impotence. In this study, we classified the types of curve on AVS-Penogram in detail and evaluated the origin of each of the classified types for 308 patients who were
finally
diagnosed by comprehensive diagnostic methods. Also we divided the unstable type into the multi-peak type and the one-peak type based on the number of peaks in the curve, and the delay type into the simple-delay type and the unstable-delay type
based on
whether there were fluctuations or not. After evaluating and considering the clinical significance of each of the curve type, we have reached the following conclusion
1. Type I group which is similar to normal control group was proved as psychogenic impotence in 86% of the patients.
2. The impossible type. II A group was proved as organic impotence in 97% of the patients and most of them had neurogenic and arteriogenic impotence.
3. The unstable type, II B group was proved as psychogenic impotence in 52% of the patients; 61% in the case of the multi-peak type, and 15% in the case of the one-peak type. The difference between both types were statistically significant. We
think
the one-peak type is more strongly ralated to organic cause, and in the case of the multi-peak type, further studies are needed for differential diagnosis between psychogenic and vasculogenic impotence, which were the most frequent types.
4. The delay type, II C group was proved as psychogenic impotence in 41% of the patients ; 44% in the case of the simple-delay type, and 39% in the case of the unstable-delay type. There was no significant difference between these two types. In
the
case of the delay type, further studies are needed for differential diagnosis between psychogenic and arteriogenic impotence, which were the most frequent types.
In conclusion, AVS-Penogram is a useful method in measurement of natural erotic erection and a primary diagnostic method in impotence, and it is an important differential diagnostic parameter to divide the unstable type into the multi-peak type
and
the
one-peak type. Also in the case of the patient classified as multi-peak type, if more studies about neurotransmitter can be done, diagnostic methods from these studies can be developed, and the objective analysis of nocturnal penile enlargement
can
be
achieved, now organic factor will be found in the patients proved to be psychogenic impotence.
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